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Under what conditions do metals and polymers show a transition between ductile and brittle behaviour? For...

Under what conditions do metals and polymers show a transition between ductile and brittle behaviour?

For both materials use sketches and a few words to explain the difference in ductile and brittle behaviour in terms of what is happening at the atomic/molecular level.

Describe and briefly discuss an example where this behaviour is important.

Engineering   Mechanical-Engineering   
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